CN103034131B - Intelligent appliance - Google Patents

Abstract

A smart home appliance includes a metamaterial antenna, a control module, and a sensing module. The metamaterial antenna includes a dielectric substrate, a feed point arranged on a surface of the dielectric substrate, and a feed point connected to the feed point. A feeder and a metal structure; the feeder and the metal structure are coupled to each other, the smart home appliance receives wireless electromagnetic wave signals through the metamaterial antenna, and the control module generates a control detection command or an action execution command in response to the electromagnetic wave signal; the sensor The module responds to the control detection command to detect the parameter index of the smart home appliance and feeds it back to the control module. The control module generates the state information of the smart home appliance according to the detected parameter index and radiates it in the form of electromagnetic waves based on the metamaterial antenna. The above-mentioned smart home appliances are connected to the Internet of Things and the Internet through wireless means. Users can know the working conditions of various home appliances in their families at any time and anywhere, and control various home appliances in a timely and convenient manner.

Description

Smart Appliances

technical field

The invention relates to smart home appliances, in particular to a wireless smart home appliance.

Background technique

Smart home appliances are home appliances formed after the introduction of microprocessor and computer technology into home appliances. They have the functions of automatic monitoring of their own faults, automatic measurement, automatic control, automatic adjustment and communication with remote control centers. The rapid development of intelligent control technology and information technology also provides the possibility for home appliance automation and intelligence. Traditional household appliances include air conditioners, refrigerators, vacuum cleaners, rice cookers, washing machines, etc. New household appliances include induction cookers, disinfection cupboards, steamers and stewers, etc. Regardless of new household appliances or traditional household appliances, the overall technology is constantly improving. The key to the progress of household appliances lies in the adoption of advanced control technology, so that household appliances have changed from a mechanical appliance to an intelligent device. Smart household appliances embody the latest technological features of household appliances.

In the future, smart home appliances will mainly develop in three directions: multiple intelligence, self-adaptive evolution, and networking. A variety of intelligence is the function of household appliances simulating the intelligent thinking or intelligent activities of multiple people in their unique working functions as much as possible. Adaptive evolution is the ability of home appliances to automatically optimize their working methods and processes according to their own state and the external environment. This ability enables home appliances to be in the most efficient, energy-saving and best-quality state during their life cycle. Networking is a form of establishing a home appliance society. Networked home appliances can be remotely controlled by users, and interoperability can also be realized between home appliances. However, the trend of networking is mainly to get rid of the trouble of connecting to the network in a wired way before.

However, when accessing the network wirelessly, the radio frequency devices that need to be used, that is, the requirements of the antenna are high-speed, ultra-wideband, and large-capacity transmission of these shared signals. As the radiating unit and receiving device of the final radio frequency signal, the working characteristics of the antenna will directly affect the working performance of the entire electronic system. However, important indicators such as the size, bandwidth, and gain of the antenna are limited by basic physical principles (gain limit, bandwidth limit, etc. under a fixed size).

Contents of the invention

In order to solve the problems existing in existing smart home appliances, the present invention provides a wireless smart home appliance. By applying high-performance metamaterial built-in antenna technology, the built-in antenna can be realized on the premise of meeting the performance requirements of smart home appliances. The present invention Adopt the following technical solutions:

A smart home appliance includes a metamaterial antenna, a control module, and a sensing module. The metamaterial antenna includes a dielectric substrate, a feed point arranged on a surface of the dielectric substrate, and a feed point connected to the feed point. A feeder and a metal structure; the feeder and the metal structure are coupled to each other, the smart home appliance receives wireless electromagnetic wave signals through the metamaterial antenna, and the control module generates a control detection command or an action execution command in response to the electromagnetic wave signal; the sensor The module responds to the control detection command to detect the parameter index of the smart home appliance and feeds it back to the control module. The control module generates the state information of the smart home appliance according to the detected parameter index and radiates it in the form of electromagnetic waves based on the metamaterial antenna.

Further, the metal structure is formed by engraving a groove topology on a metal sheet.

Further, the metamaterial antenna further includes a grounding unit, which is symmetrically distributed on both sides of the feed point; and several metallized through holes are arranged on the grounding unit.

Further, the metamaterial antenna also includes a reference ground, the reference ground includes a first reference ground unit and a second reference ground unit located on opposite surfaces of the dielectric substrate, the first reference ground unit makes the One end of the feeder line forms a microstrip line.

Further, the first reference ground unit and the second reference ground unit are electrically connected to each other.

Further, the dielectric substrate is provided with several metallized through holes, and the first reference ground unit and the second reference ground unit are electrically connected through the metallized through holes.

Further, the first reference ground unit is provided with a first metal plane unit and a second metal plane unit electrically connected to each other, the first metal plane unit is opposite to one end of the feeder line, so that one end of the feeder line The microstrip line is formed; the second reference ground unit is provided with a third metal plane unit, and the third metal plane unit is opposite to the second metal plane unit.

Further, the dielectric substrate is provided with a plurality of metallized through holes at the second metal surface unit and the third metal surface unit, and the second metal surface unit and the third metal surface unit pass through the Metallized vias for electrical connections.

Further, the second reference ground unit further includes a fourth metal surface unit, the fourth metal surface unit is located on one side of one end of the feeder line, and is located in the extension direction of the feeder line, and the first metal surface unit The unit is electrically connected to the unit on the fourth metal surface through the metallized through hole.

Further, the resonance frequency band of the metamaterial antenna includes at least 2.4GHz-2.49GHz and 5.72GHz-5.85GHz.

Further, the smart home appliance is any one of air conditioners, central air conditioners, refrigerators, washing machines, smart lamps, smart vacuum cleaners, smart curtains, smart rice cookers, smart water heaters, and smart microwave ovens.

Compared with the prior art, the smart home appliance of the present invention uses a built-in metamaterial antenna. Based on the metamaterial antenna technology, a metamaterial antenna is designed to resonate electromagnetic waves in one band, two or more different bands, and the size of the antenna volume is determined. The physical size of the metal structure is not limited by the physical length of the half-wavelength, and the corresponding antenna can be designed according to the size of the smart home appliance itself to meet the needs of miniaturization of wireless communication equipment and built-in antennas. In addition, through the built-in metamaterial antenna, the above-mentioned smart home appliances are connected to the Internet of Things and the Internet wirelessly, so that users can know the working conditions of various home appliances in their homes at any time and anywhere, and control various home appliances in a timely and convenient manner.

Description of drawings

Figure 1 is a block diagram of a smart home appliance;

Fig. 2 is a front view of the first embodiment of the antenna in the smart home appliance of the present invention;

Fig. 3 is a rear view of the antenna shown in Fig. 3;

Fig. 4 is a simulation diagram of S parameters of the first embodiment of the antenna of the present invention;

Fig. 5 is a front view of the second embodiment of the antenna in the smart home appliance of the present invention;

Fig. 6 is a front view of the third embodiment of the antenna in the smart home appliance of the present invention;

7 is an enlarged view of the metal structure of the second and third embodiments of the antenna of the present invention;

Fig. 8 is a simulation diagram of S parameters of the first embodiment of the antenna of the present invention;

Fig. 9 is a diagram of far-field simulation results in the E direction when the second and third embodiments of the present invention operate at 2.4, 2.44, and 2.48 GHz;

Fig. 10 is a diagram of the far-field simulation results in the H direction when the second and third embodiments of the present invention operate at 2.4, 2.44, and 2.48 GHz;

Figure 11 is a diagram of the far-field simulation results in the E direction when the second and third embodiments of the present invention operate at 5.725, 5.8, and 5.85 GHz;

Fig. 12 is a diagram of far-field simulation results in the H direction when the second and third embodiments of the present invention operate at 5.725, 5.8, and 5.85 GHz.

detailed description

The smart home appliance of the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

Please refer to FIG. 1 , which is a block diagram of a smart home appliance in the present invention. The smart home appliance 100 includes a metamaterial antenna 10, a control module 11, and a sensing module 12. The smart home appliance 100 receives wireless electromagnetic wave signals through the metamaterial antenna 10, and the control module 11 generates a control detection command or an action execution command in response to the electromagnetic wave signal. The sensor module 12 responds to the control detection command to detect the parameter index of the smart home appliance and feeds it back to the control module 11, and the control module 11 generates the state information of the smart home appliance 100 according to the detected parameter index and radiates it in the form of electromagnetic waves based on the metamaterial antenna 10; Or the smart home appliance 100 executes corresponding actions in response to the action execution command. In the present invention, the smart home appliances 100 include but are not limited to air conditioners, central air conditioners, refrigerators, washing machines, smart lamps, smart vacuum cleaners, smart curtains, smart rice cookers, smart water heaters, and smart microwave ovens. The above-mentioned smart home appliances 100 are connected to the Internet of Things and the Internet through wireless means, so that users can know the working conditions of various home appliances in their families at any time and anywhere, and control various home appliances in a timely and convenient manner.

The antenna in the smart home appliance of the present invention is designed based on the artificial electromagnetic material technology. The artificial electromagnetic material refers to a topological metal structure carved from a metal sheet into a specific shape, and the topological metal structure of a specific shape is set at a certain dielectric constant and The performance parameters of the equivalent special electromagnetic materials processed and manufactured on the magnetic permeability substrate mainly depend on the topological metal structure of its subwavelength specific shape. In the resonant frequency band, artificial electromagnetic materials usually exhibit high dispersion characteristics. In other words, the impedance, capacitive inductance, equivalent permittivity and magnetic permeability of the antenna will change drastically with frequency. Therefore, artificial electromagnetic material technology can be used to modify the basic characteristics of the above antenna, so that the metal structure and its attached dielectric substrate equivalently form a highly dispersive special electromagnetic material, thereby realizing a new type of antenna with rich radiation characteristics. Several implementations of metamaterial antennas in smart home appliances are introduced in detail below:

first embodiment

Please refer to FIG. 3 and FIG. 4 together. The metamaterial antenna 10 includes a dielectric substrate 1, a metal structure 2, a feeder 3 and reference grounds 41, 42. The dielectric substrate 1 is in the shape of a rectangular plate, which can be made of polymer, Made of materials such as ceramics, ferroelectric materials, ferrite materials or ferromagnetic materials. In this embodiment, the material of the dielectric substrate 1 is made of glass fiber material (FR4), so that not only the cost is low, but also good antenna working characteristics can be maintained at different working frequencies.

The metal structure 2 , the feeder 3 and the reference grounds 41 and 42 are respectively placed on the two opposite surfaces of the dielectric substrate 1 , the metal structure 2 , the feeder 3 and the reference grounds 41 and 42 are formed with the dielectric substrate 1 Metamaterial antenna, the performance of the metamaterial antenna depends on the metal structure 2, in the resonant frequency band, the metamaterial usually exhibits high dispersion characteristics, that is, its impedance, capacitive inductance, equivalent permittivity and magnetic permeability The frequency will change drastically, so by changing the basic characteristics of the metal structure 2 and the dielectric substrate 1, the metal structure 2 and the dielectric substrate 1 are equivalent to form a height according to the Lorentz material resonance model Dispersion of special electromagnetic materials.

Please refer to FIG. 5 , the working frequency bands of the metamaterial antenna in this embodiment are 2.4GHZ˜2.49GHZ and 5.72GHZ˜5.85GHZ, and the gains of the above two frequency bands can reach 3.58dBi and 3.14dBi respectively. It can be understood that the metamaterial antenna 10 can be set to only respond to a frequency band of 2.4GHZ-2.49GHZ, that is, a single-frequency antenna.

The feeder 3 is arranged on one side of the metal structure 2, and extends along the length direction of the metal structure 2, and is coupled with the metal structure 2, wherein, one end of the feeder 3 is bent and extends to One side of the end of the metal structure 2 . In addition, capacitive electronic components can be embedded in the space between the feeder 3 and the metal structure 2 as required, and the signal coupling between the feeder 3 and the metal structure 2 can be adjusted by embedding the capacitive electronic components, according to the formula: , it can be seen that the capacitance value is inversely proportional to the square of the operating frequency, so when the required operating frequency is a lower operating frequency, it can be realized by embedding appropriate capacitive electronic components. The capacitance value range of the added capacitive electronic components is usually between 0-2pF, but the embedded capacitance value may also exceed the range of 0-2pF as the operating frequency of the antenna changes.

The reference ground is located at one side of the feeder 3 , so that one end of the feeder 3 at the end of the metal structure 2 forms a microstrip line 31 . In this embodiment, the reference ground includes a first reference ground unit 41 and a second reference ground unit 42, and the first reference ground unit 41 and the second reference ground unit 42 are respectively located on opposite sides of the dielectric substrate 1. surface. The first reference ground unit 41 is provided with a first metal plane unit 411 and a second metal plane unit 412 electrically connected to each other. The second reference ground unit 42 is located on the same side of the dielectric substrate 1 as the feeder 3 , and is provided with a third metal plane unit 421 and a fourth metal plane unit 422 .

The first metal surface unit 411 is opposite to the feeder 3 , so that one end of the feeder 3 at the end of the metal structure 2 forms the microstrip line 31 , that is, the reference ground is a virtual ground. The second metal surface unit 412 is opposite to the third metal surface unit 421 . The third metal surface unit 421 is located at one end of the metal structure 2 , and the third metal surface unit 421 is in the shape of a rectangular plate and extends in the same direction as the feeder 3 . The dielectric substrate 1 is provided with a plurality of metallized through holes 5 at the second metal surface unit 412 and the third metal surface unit 421. The second metal surface unit 412 and the third metal surface unit 421 Electrical connections are made through the metallized vias 5 .

The fourth metal surface unit 422 is located on one side of one end of the feeder 3 and in the extending direction of the feeder 3 . The dielectric substrate 1 is located at the first metal surface unit 411 and the fourth metal surface unit 422 to open a number of metallized through holes 5, the first metal surface unit 411 and the fourth metal surface unit 422 Electrical connections are made through the metallized vias 5 . The microstrip line 31 is formed by the first metal surface unit 411 and one end of the feeder 3, thereby reducing external signal interference to signals transmitted on the feeder 3, improving antenna gain, and achieving better impedance matching. Material saving and low cost. The space between the first metal surface unit 411 and the fourth metal surface unit 422 is ingeniously arranged, so that the reference ground occupies a smaller space and realizes a larger area. In addition, by providing the metallized through hole 5, the area of the reference ground can be further increased.

In summary, the metamaterial antenna 10 of the present invention obtains the required equivalent permittivity and permeability distribution by precisely controlling the topology of the metal structure 2 and the layout of the microstrip line 31, so that the antenna can operate in the working frequency band It achieves better impedance matching, completes energy conversion efficiently, and obtains an ideal radiation pattern. It occupies a small volume, has low environmental requirements, high gain, and a wide range of applications. It is suitable for built-in antennas in smart home appliances.

second embodiment

As shown in FIG. 6 , it is a schematic structural diagram of a metamaterial antenna 10 according to an embodiment of the present invention. The metamaterial antenna 10 in this embodiment includes a dielectric substrate 7 , a feeding point 5 arranged on the dielectric substrate 7 , a feeding line 4 connected to the feeding point 5 , and a planar metal structure 6 . Among them, the feeder 4 and the metal structure 6 are coupled to each other; the metal structure 6 is formed by engraving a slot topology 61 on a metal sheet, and the material corresponding to the slot topology 61 is removed during engraving, and the remaining metal sheet is the metal structure 6. After exiting the topological structure 61 of the groove, the metal traces 62 included in the metal structure 6 appear on the metal sheet; the distance between adjacent grooves in the topological structure 61 of the groove is the width of the traces 62 of the metal, and the width of the topological structure 61 and The widths of the metal traces 62 are equal, and both are 0.15 mm; the dielectric substrate 7 can be made of ceramic materials, polymer materials, ferroelectric materials, ferrite materials or ferromagnetic materials, preferably, polymer materials, specifically The ground can be polymer materials such as FR-4 and F4B.

In this embodiment, the metal structure 6 is in the shape of an axisymmetric planar plate. Wherein the metal structure 6 is made of copper or silver. It is preferably copper, which is cheap and has good electrical conductivity. In order to achieve better impedance matching, the metal structure 6 can also be a combination of copper and silver.

Please refer to FIG. 7, which is a front view of the third embodiment of the present invention. The difference between the third embodiment and the second embodiment is that it also includes a grounding unit 8, and a plurality of metallized through holes 81 are arranged on the grounding unit 8; the grounding unit 8 is symmetrical. The two sides of the feeding point 5 are distributed in a uniform manner, and the selection of the dielectric substrate 7 is the same as that of the first embodiment. FIG. 8 is an enlarged view of the metal structures of the second embodiment and the third embodiment. It can be understood that there may be multiple ways of feeding signals between the feeder line 4 and the metal structure 6 . The feeder 4 is directly connected to the metal structure 6 ; and the connection point between the feeder 4 and the metal structure 6 can be located at any position on the metal structure 6 . The feeder 4 is arranged on the periphery of the metal structure 6 in a surrounding manner and the end of the feeder 4 is arranged at any position on the periphery of the metal structure 6 .

This embodiment takes advantage of the characteristics of artificial electromagnetic materials, and adopts the method of engraving a metal structure on a metal sheet, so that the metal structure and the dielectric substrate attached to the metal structure together form an equivalent dielectric constant according to the dispersion of the Lorentz material resonance model. Electromagnetic materials, so as to design antennas with multiple resonant frequency bands. In this embodiment, the antennas shown in the second embodiment and the third embodiment resonate electromagnetic waves in two frequency bands of 2.4GHz-2.49GHz and 5.72GHz-5.85GHz, and the length and width of the metal structure 6 can be adjusted according to the structure of the communication equipment. The layout can be adjusted arbitrarily, but the structural shape of the metal structure 6 can be kept consistent with that in this embodiment. The monopole antenna can be used for single-frequency 2.4GHz-2.49GHz or 5.72GHz-5.85GHz Dual-band 2.4GHz-2.49GHz and 5.72GHz-5.85GHz frequency band communication equipment.

As shown in Figure 9, it is the S-parameter simulation diagram of the second embodiment and the third embodiment of the present invention, which shows that the antennas of the second embodiment and the third embodiment have -15.426dB at 2.4GHz and 5.8018GHz respectively And the loss of -19.184dB, in the 2.4GHz-2.49GHz and 5.72GHz-5.85GHz frequency bands required by the present invention, there is a loss below -10dB, showing that the antenna of the present invention can operate independently at 2.4GHz-2.49GHz or 5.72GHz - work in the frequency band of 5.85GHz, and can also work in the frequency bands of 2.4GHz-2.49GHz and 5.72GHz-5.85GHz at the same time, and meet the requirements for the metamaterial antenna 10 in smart home appliances.

Fig. 10, Fig. 11 and Fig. 12 respectively show the metamaterial antenna 10 of the second embodiment and the third embodiment of the present invention operate in the vertical plane (E- Plane) and horizontal plane (H-Plane) direction far-field simulation results, in this result it can be observed that the polarization effect of the metamaterial antenna of the present invention is no less than that of the existing antenna and meets the application standard.

In the present invention, regarding the processing and manufacturing of the metamaterial antenna 10 , as long as the design principle of the present invention is satisfied, various manufacturing methods can be adopted. The most common method is to use various printed circuit board (PCB) manufacturing methods, such as copper-clad PCB manufacturing, which can meet the processing requirements of the present invention. In addition to this processing method, other processing methods can also be introduced according to actual needs, such as the processing method of conductive silver paste ink, flexible PCB processing of various deformable devices, the processing method of iron sheet antenna, and the processing method of combining iron sheet and PCB. Among them, the combined processing method of iron sheet and PCB refers to the use of precise processing of PCB to complete the processing of slot topology, and use iron sheet to complete other auxiliary parts. Since the metal structure 6 is formed of low-cost copper material, it is easily oxidized when exposed to the air, causing the resonant frequency of the metamaterial antenna 10 to shift or the performance to drop sharply. Therefore, a non-metallic anti-oxidation film is provided on the surface of the monopole antenna . Since the main performance of the present invention is focused on the design of the metal structure 6-slot topology 61 , the lead wire of the feeder 4 has relatively little influence on the radiation frequency of the metamaterial antenna 10 . Based on this feature, the metamaterial antenna 10 can be flexibly placed in a smart home appliance, simplifying the complexity of installation and testing.

Embodiments of the present invention have been described above in conjunction with the accompanying drawings, but the present invention is not limited to the above-mentioned specific implementations, and the above-mentioned specific implementations are only illustrative, rather than restrictive. Those of ordinary skill in the art will Under the enlightenment of the present invention, many forms can also be made without departing from the gist of the present invention and the protection scope of the claims, and these all belong to the protection of the present invention.

Claims (7)

1. an intelligent appliance, it is characterised in that include a Super-material antenna, control module and sensing module, Described Super-material antenna include a medium substrate and be arranged at described medium substrate one surface a distributing point and Feeder line that described distributing point is connected and a metal structure；Described feeder line intercouples with described metal structure, Described intelligent appliance receives radio magnetic wave signal by described Super-material antenna, and control module responds described electricity Magnetostatic wave signal produces and controls sense command or action executing order；Sensing module response is described controls detection life Order detection intelligent appliance parameter index also feeds back to described control module, and control module is according to the parameter detected Index produces the status information of intelligent appliance and radiates with electromagnetic wave based on Super-material antenna；Or intelligence man Electroresponse action executing order performs corresponding action；

Described Super-material antenna also includes that one includes being positioned at described medium substrate relative to two with reference to ground, described reference ground On surface first is with reference to ground unit and second with reference to ground unit, and described first makes described feeder line with reference to ground unit One end formed microstrip line；

Described first is provided with, with reference to ground unit, the first metal covering unit and the second metal covering list being electrically connected to each other Unit, described first metal covering unit is relative with an end position of described feeder line, makes one end of described feeder line be formed Described microstrip line；Described second is provided with the 3rd metal covering unit, described 3rd metal covering list with reference to ground unit First and described second metal covering cell position is relative；

It is described that described second reference ground unit also includes that the 4th metal covering unit, described 4th metal covering unit are positioned at The side of feeder line one end, and be positioned on the bearing of trend of described feeder line, described first metal covering unit is with described 4th metal covering unit is electrically connected by described plated-through hole.

Intelligent appliance the most according to claim 1, it is characterised in that described metal structure is sheet metal Form through engraving out groove topological structure.

Intelligent appliance the most according to claim 1, it is characterised in that described Super-material antenna also includes Ground unit, described ground unit is symmetrically distributed described distributing point both sides；It is provided with on described ground unit Several metallized through holes.

Intelligent appliance the most according to claim 1, it is characterised in that: described first with reference to ground unit and Second is electrically connected to each other with reference to ground unit.

Intelligent appliance the most according to claim 3, it is characterised in that: if described medium substrate is provided with Dry plated-through hole, described first is led to by described metallization with reference to ground unit with described second with reference to ground unit Hole realizes electrical connection.

6. according to the intelligent appliance described in claim 1 or 3 or 4, it is characterised in that: described medium substrate It is positioned at described second metal covering unit and described 3rd metal covering unit and offers some plated-through holes, institute State the second metal covering unit to be electrically connected by described plated-through hole with described 3rd metal covering unit.

7. according to the intelligent appliance described in any one of claim 1-5, it is characterised in that described intelligent appliance It is air-conditioning, refrigerator, washing machine, Intelligent lamp, intellective dust collector, intelligent curtain, intelligent electric cooker, intelligence Can any one in water heater, Intelligent microwave oven.